Tim Walz's Proud Son Cries During Dad's Speech at DNC

Gov. Tim Walz‘s big moment at the DNC brought the crowd to its feet, especially his 17-year-old son … whose emotional reaction to his dad’s speech became a real tearjerker moment.

Gus Walz sat front and center Wednesday night in Chicago, and he just couldn’t hold back his emotions in the moment — breaking into tears and screaming “That’s my dad!” during the speech.

Check out the clip … Gus — who has a non-verbal learning disorder, ADHD and anxiety — jumped to his feet clapping loudly and pointing with his mother Gwen and sister Hope sitting beside him.

Gus got even more emotional after climbing onstage … wrapping his dad in a bear hug before he and his family raised their arms in a triumphant pose.

Now, Gus is getting as much attention as his VP-hopeful father … at least online, where many are applauding his heartwarming enthusiasm — and, naturally, Harris-Walz supporters say it’s a sign of how beloved the Minnesota Governor already is, and will be as VP.

Worth noting … Walz talked openly during his speech about the fertility treatments he and his wife went through to conceive Gus and Hope — a point of contention among some Republicans who are carrying around fake J.D. Vance sperm sample cups.